Accuracy Check

Function Description: Calculates accuracy statistics for check points and outputs horizontal and elevation RMSE values.

Steps

  1. Click the dropdown button to the right of the Report panel. On the dropdown menu, click the Accuracy Check button to open the Accuracy Check dialog box.
Accuracy Check

Accuracy Check

  1. Click the Load Points button to import the check point file.

  2. Pick points: Switch the point cloud display mode to Display by Intensity. Double-click a check point ID to jump to its location at the current zoom level. Click the button to pick the point. The software then calculates Dx, Dy, Dz, and abs(XYZ) for the point.

Accuracy Check Error Calculation

Accuracy Check: Error Calculation

  1. Review the RMSE values: After picking three or more check points, the software calculates the horizontal RMSE (RMSE_XY), elevation RMSE (RMSE_Z), and the maximum and minimum error values.
Accuracy Check RMSE Calculation

Accuracy Check: RMSE Calculation

  1. Output a statistical report: Click the Save button to save the report as a TXT file.
Accuracy Check Report

Report

  1. Exit: Click the button or close the Accuracy Check window to exit the function.

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